Leucanthemum plant named ‘Doleuswedaiza’

ABSTRACT

A new and distinct cultivar of Leucanthemum plant named ‘Doleuswedaiza’, characterized by its upright and mounded plant habit; freely branching habit; strong and upright flowering stems; early and freely flowering habit; semi-double type inflorescences with light yellow-colored ray florets and dark yellow-colored disc florets; good inflorescence longevity; and good garden performance.

Botanical designation: Leucanthemum x superbum X Leucanthemum maximum.

Cultivar denomination: ‘DOLEUSWEDAIZA’.

CROSS-RESTATEMENT REGARDING PRIOR DISCLOSURES BY INVENTOR & APPLICANT/ASSIGNEE

An European Community Plant Breeder's Rights application for the instant plant was filed by the Applicant/Assignee, Dümmen Group B.V. of De Lier, The Netherlands on Aug. 15, 2022, application number 2022/1926. Foreign priority is not claimed to this application.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Leucanthemum plant, botanically known as Leucanthemum x superbum X Leucanthemum maximum and hereinafter referred to by the name ‘Doleuswedaiza’.

The new Leucanthemum plant is a product of a planned breeding program conducted by the Inventor in Aalsmeer, The Netherlands. The objective of the breeding program is to create new compact Leucanthemum plants with numerous unique and attractive inflorescences.

The new Leucanthemum plant originated from a cross-pollination made by the Inventor in June, 2014 of Leucanthemum x superbum ‘Goldfinch’, disclosed in U.S. Plant Pat. No. 24,499, as the female, or seed, parent with a proprietary selection of Leucanthemum maximum identified as code number LC-003, not patented, as the male, or pollen, parent. The new Leucanthemum plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated open-pollination in a controlled environment in Aalsmeer, The Netherlands in April, 2015.

Asexual reproduction of the new Leucanthemum plant by vegetative terminal cuttings in Aalsmeer, The Netherlands, since May, 2015 has shown that the unique features of this new Leucanthemum plant are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Leucanthemum have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Doleuswedaiza’. These characteristics in combination distinguish ‘Doleuswedaiza’ as anew and distinct Leucanthemum plant:

-   -   1. Upright and mounded plant habit.     -   2. Freely branching habit.     -   3. Strong and upright flowering stems.     -   4. Early and freely flowering habit.     -   5. Semi-double type inflorescences with light yellow-colored ray         florets and dark yellow-colored disc florets.     -   6. Good inflorescence longevity.     -   7. Good garden performance.

Plants of the new Leucanthemum differ primarily from plants of the female parent, ‘Goldfinch’ in growth habit as plants of the new Leucanthemum grow faster than plants of ‘Goldfinch’.

Plants of the new Leucanthemum differ primarily from plants of the male parent selection in inflorescence type and ray floret color as plants of the new Leucanthemum have semi-double type inflorescences with light yellow-colored ray florets whereas plants of the male parent selection have single-type inflorescences with white-colored ray florets.

Plants of the new Leucanthemum can be compared to plants of Leucanthemum superbum ‘Real Neat’, disclosed in U.S. Plant Pat. No. 26,185. In side-by-side comparisons, plants of the new Leucanthemum differ from plants of ‘Real Neat’ in the following characteristics:

-   -   1. Plants of the new Leucanthemum flower later than plants of         ‘Real Neat’.     -   2. Plants of the new Leucanthemum have semi-double type         inflorescences whereas plants of ‘Real Neat’ have spider-type         inflorescences.     -   3. Ray florets of plants of the new Leucanthemum are light         yellow in color whereas ray florets of plants of ‘Real Neat’ are         white in color.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying colored photographs illustrate the overall appearance of the new Leucanthemum plant showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Leucanthemum plant.

The photograph on the first sheet (FIG. 1 ) is a side perspective view of a typical flowering plant of ‘Doleuswedaiza’ grown in a container.

The photograph on the second sheet (FIG. 2 ) comprises close-up views of a typical inflorescence bud and the upper and lower surfaces of typical inflorescences and leaves of plants of ‘Doleuswedaiza’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations and measurements describe plants grown in 13-cm containers in Aalsmeer, The Netherlands during the early summer initially in a greenhouse and finished in an outdoor nursery and grown under conditions and cultural practices which approximate those generally used in commercial Leucanthemum plant production. During the production of the plants, day temperatures averaged 21C and night temperatures averaged 15C. Plants were 16 weeks old when the photographs and description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, Fifth Edition, except where general terms of ordinary dictionary significance are used. Measurements represent averages for typical flowering plants.

-   Botanical classification: Leucanthemum x superbum X Leucanthemum     maximum ‘Doleuswedaiza’. -   Parentage:     -   -   Female, or seed, parent.—Leucanthemum x superbum             ‘Goldfinch’, disclosed in U.S. Plant Pat. No. 24,499.         -   Male, or pollen, parent.—Proprietary selection of             Leucanthemum maximum identified as code number LC-003, not             patented. -   Propagation:     -   -   Type.—Terminal vegetative cuttings.         -   Time to initiate roots, summer.—About twelve days at             temperatures about 26C.         -   Time to initiate roots, winter.—About two weeks at             temperatures about 23C.         -   Time to produce a rooted young plant, summer.—About two             weeks at temperatures about 23C.         -   Time to produce a rooted young plant, winter.—About 16 days             at temperatures about 18C.         -   Root description.—Medium in thickness, fibrous; typically             white to light brown in color, actual color of the roots is             dependent on substrate composition, water quality,             fertilizer type and formulation, substrate temperature and             physiological age of roots.         -   Rooting habit.—Moderately freely branching, medium density. -   Plant description:     -   -   Plant and growth habit.—Herbaceous perennial; upright and             mounded plant habit; moderately vigorous growth habit;             freely branching habit with about eight primary branches             developing per plant.         -   Plant height.—About 26 cm.         -   Plant width.—About 31 cm.         -   Branch description.—Length: About 25 cm. Diameter: About             7 mm. Internode length: About 3.5 cm. Strength: Strong.             Aspect: Erect to about 40 degrees from vertical. Texture and             luster: Pubescent; glossy. Color, developing: Close to 146B.             Color, developed: Close to N137A.         -   Leaf description.—Arrangement: Alternate; simple; sessile.             Length: About 10.5 cm. Width: About 2.3 cm. Shape:             Lanceolate. Apex: Acute. Base: Truncate. Margin: Serrate             with shallow and divergent indentations; undulate. Texture             and luster, upper and lower surfaces: Smooth, glabrous;             glossy. Venation pattern: Pinnate. Color: Developing leaves,             upper surface: Close to N137C. Developing leaves, lower             surface: Close to 137B. Fully developed leaves, upper             surface: Close to N137A; venation, close to 137B. Fully             developed leaves, lower surface: Close to N137A; venation,             close to 137C. -   Inflorescence description:     -   -   Appearance.—Semi-double type inflorescences with             ligulate-shaped ray florets and tubular disc florets;             inflorescences held upright on strong peduncles,             inflorescences face mostly upright; ray and disc florets             develop acropetally on a capitulum.         -   Fragrance.—Slightly fragrant, pleasant.         -   Flowering response.—Plants begin flowering about twelve             weeks after planting; plants flower naturally during June             and July in The Netherlands.         -   Postproduction longevity.—Inflorescences maintain good             substance for about six to eight weeks on the plant;             inflorescences persistent.         -   Quantity of inflorescences.—Freely flowering habit, about 22             inflorescences develop per plant during the flowering             season.         -   Inflorescence size.—Diameter: About 8 cm. Depth (height):             About 3 cm. Disc diameter: About 2.5 cm.         -   Receptacles.—Height: About 3 mm. Diameter: About 1.9 cm.             Color: Close to 145B.         -   Inflorescence buds.—Height: About 1.4 cm. Diameter: About             1.8 cm. Shape: Flattened sphere. Texture and luster: Smooth,             glabrous; glossy. Color: Close to 2B.         -   Ray florets.—Quantity per inflorescence: About 80 arranged             in about three to four whorls. Length: About 3.3 cm. Width:             About 1.1 cm. Shape: Ligulate. Apex: Emarginate. Base:             Attenuate and fused at the base. Margin: Entire; slightly             undulate. Aspect: Mostly horizontal to slightly reflexing             with development. Texture and luster, upper and lower             surfaces: Smooth, glabrous; matte. Color: When opening,             upper and lower surfaces: Close to 2B. Fully opened, upper             surface: Close to 3D; color does not change with subsequent             development. Fully opened, lower surface: Close to 2D; color             does not change with subsequent development.         -   Disc florets.—Quantity per inflorescence: About 476 massed             at the center of the receptacle arranged in about 14 whorls.             Length: About 6 mm. Diameter: About 1 mm. Shape: Fused             tubular. Apex: Acute, five-pointed. Texture and luster,             inner and outer surfaces: Smooth, glabrous; matte. Color:             When opening, inner and outer surfaces: Close to 15A.

Fully opened, inner and outer surfaces: Close to 15B; color does not change with subsequent development.

-   -   -   Involucral bracts.—Quantity per inflorescence: About 80             arranged in about three or four whorls. Length: About 9 mm.             Width: About 5 mm. Shape: Deltoid. Apex: Acute. Base:             Truncate. Margin: Entire. Texture and luster, upper surface:             Smooth, glabrous; semi-glossy. Texture and luster, lower             surface: Smooth, glabrous; glossy. Color, upper and lower             surfaces: Close to 137A.         -   Peduncles.—Length: About 3.5 cm to 5 cm. Diameter: About             6 mm. Strength: Strong. Aspect: Erect to about 10 degrees             from vertical. Texture and luster: Pubescent; glossy. Color:             Close to 137A.         -   Reproductive organs.—Androecium: Present on disc florets             only. Quantity per floret: Five per disc floret. Filament             length: About 2 mm. Filament color: Close to 144C. Anther             shape: Roughly rectangular. Anther size: About 1 mm by 3 mm.             Anther color: Close to 17A. Pollen amount: Abundant. Pollen             color: Close to 17A. Gynoecium: Present on ray and disc             florets. Quantity per floret: One. Pistil length: About             6 mm. Stigma diameter: About 1 mm. Stigma shape: Bi-parted.             Stigma color: Close to 153A. Style length: About 4 mm. Style             color: Close to 144C. Ovary color: Close to 142C.         -   Seeds and fruits.—To date, seed and fruit development have             not been observed on plants of the new Leucanthemum.

-   Pathogen & pest resistance: To date, plants of the new Leucanthemum     have not been observed to be resistant to pathogens and pests common     to Leucanthemum plants.

-   Garden performance: Plants of the new Leucanthemum have exhibited     good tolerance to rain, wind and to tolerate temperatures ranging     from −30C to about 35C and to be suitable for USDA Hardiness Zones 4     through 9. 

It is claimed:
 1. A new and distinct Leucanthemum plant named ‘Doleuswedaiza’ as illustrated and described. 